Incinerator



lm 29, 129 @$700,500 E. B. KAY

INCINERATOR Filed June 10, 1924 3 Sheets-Sheet l a nnen/Coz .if @www E.E. KAY

INCINERATOR Jamo 29j, 3929 Flled June 192 E, B. KAY

INCINERATOR Jamo 209 H9209 ,6 26Filed June 10, 1924 3 Sheets-Sheetgmc/wkn ordinarily vertically slidable.

Patented Jan. 29, 1929.

UNITED STATES EDGAR BOYD KAY, OF WASHINGTON, DISTRICT OF COLUMBIA.

INCINERATOR.

Application led June 10, 1924. Seriall No. 719,144.

The invention described herein may be used by the Government, or any ofits officers or employees in prosecution of work for the Government,without payment of any royalty thereon.

This invention relates to a furnace or incinerator and more particularlyto a water cooled damper adapted to Segrate certain sections of thecombustion chamber. While it is Shown as applied to an incinerator itisequally applicable to furnaces of a general construction. The objectis .to provide a simple, durable andv inexpensive construction of damperhaving a hollow metal frame through which a cooling medium is passed tomaintain a reduced temperature therein, and reduce the cost ofmaintenance of one, ofthe most expensive elements of a high temperaturefurnace.

A further object is to provide means whereby the circulating coolingmedium may be `conveniently supplied to and removed from the damper,without in any way interfering with the operation of the damper which isThis and other objects will a pear in the following description and willbe further pointed out in the appended claims.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings in which:

Fig. 1 is a vertical, longitudinal section of.

an incinerator Showing dampers separating a preheating chamber and adirect draft passage from the remainder of the combustion chamber. f

Fig. 2 is an enlarged vertical section taken transversely through one ofthe dampers.

Fig. 3 is an enlarged elevation of one of the dampers.

F ig. 4 is a detail plan view of the inlet and outlet mounting strut, atthe upper end of the damper.

Fig. 5 is a horizontal section through the lower portion of the damper.

Reference now being had to the drawings by numerals 1 represents oneform of incinerator to which this improved damper may be be applied. Thecombustion chamber 2 is provided with a means for preheating air to besupplied to certain portions of the incinerator. Said preheating chamber3 occupies the lower half of the combustion chamber over which extendsthe direct draft passage.

While this improved damper is shown as applied to a preheatingincinerator, merely for -illustrative purposes, it, of course, will beunderstood that a damper of this character is of great value in any hightemperature furnace wherein, for instance, throttling the draft isnecessary either in a natural draft or forced draft type of' furnace andoffers the greatest possible protection to the partsthat are inclined tobe most quickly consumed by said temperature. The construction shownpermits quick replacement of the fire brick of the damper, whendestroyed.

One of the improved dampers shown in this application may, for instance,occupy a position directly in front, and one directly in rear of apreheating -chamber of an incinerator, which is usually beneath thedirect draft passage, to facilitate its segregation from other portionsof the combustion chamber'or control the products of combustion for thenumerous purposes that are obvious.

Each .improved damper consists of a metal frame. preferably of heavyquality pipe of Wrought iron or steel provided with the vertical members7 7, the lower cross member 8 and the intermediate cross member 9 Theseparts are usually coupled in the Ordinar way by L and T members, saidmember 9 eing provided with a union 10. The frame preferably extends theentire height of the combustion chamber of the incinerator and, when inlowered position, projects slightly above the upper Surface thereof.

A bracing member or strut 11 consisting of two plates bolted together,spans the space between the upper ends of the damper members 7-7 andmaintain the same firmly in position. Said strut is also providedcentrally with a bolt or .other means for securing the lifting devicewhich will be described later.

Extending from the upper end of one of the vertical side members 7 is aflexible armored tubing '12, in communication with the supply pipe 13 ofthe circulating system. Connected with the upper end 0f the other sidemember 7 of the damper is a flexible armored tubing 14 connected withpiping 15 of said circulating system. Through tubular members 7, 8, 9,12, 13, 14 and 15 is circulated water, as a cooling medium which issupplied in any preferred manner through pipe 16 then through pipe 13and tube 12and the frame and out through tubing 14, returnvpipe 15, anddischarge pipe 17.

Mounted within the frame between cross members 8 and 9 are the damperblocks 18 constructed of any preferred refractory material, said blocksare provided with grooves'19 at their ends in which tubular members 7rest when the parts are assembled. The lower block 18 is also providedwith a groove 21 to lit over tubing 8 said grooves align the blocks orfirmly retain them in place.

In the construction shown eachV frame is usually mounted in a groove orrecess 22 in the masonry. Said method protects the metal parts fromdirect blast of the heated gases and makes it possible to extend theblocks and fire resisting material entirely across the opening.

As a means for conveniently handling each damper in its movement up anddown in the recess 22, eithei` for repair purposes or for controllingthe draft, a column 23 as shown in dotted outline, may be mounted insuch a position as to carry a beam 24 on which is mounted sheaves 25 and26. Over said sheaves'a lexible cable 27 extends and is provided at oneend with a counter Weight 28 and is at its other end secured to thestrut 11 preferably by coupling 29 and link 30. Said link 30 is securedby bolt at 31 to the center of the strut l1.

A removable plate 32 is provided at the upper end of the frame to closethe upper end of the channels and confine the gases of the furnace.

' In operation the damper here described may occupy an up er or a lowerposition within the furnace or e entirely removed for repair purposes.Blocks 18, notwithstanding the fact that this system provides a coolingmedium, do eventually disintegrate and require replacement, but suchwork can be quickly accomplished by removing the damper, uncoupl'ingmember 9, and swinging mem- 7 in opposite directions by swinging them 1nopposite parallel directions at which time old blocks can be readilyremoved and new blocks inserted.

By reference to Figs. 1 and 2, upright guide members 35 are shown, saidguides are provided for withdrawing the dampers entirely clear of thefurnace for repair purposes. The counterbalance mechanism for thedampers will lbe seen in dotted outlines in Figs. 2 and 3 and arearranged centrally, only onehalf of the parts being shown in Fig. 2,there leing only one of the guidesshown in said Having thus described myinvention, what I claim as new and desire to secure by Letters Patentis:

1. A water cooled damper for incinerators or the like, having a hollowframe consisting of a pair of hollow side members, connected by a hollowcross member at their lower ends,

. fire brick consisting of a plurality of members extending icross theframe above the cross member and having grooves at their ends to engagesaid hollow side members, a hollow cross member arranged immediatelyabove the .lire clay members and communicating with said hollow sidemembers, and made up of complementary parts joined by a union to enableadjustment of the parts for the replacement of the fire brick, aflexible water supply pipe secured to the upper end of one of the sideframe members and connected with a supply of water, a flexible dischargepipe secured to the upper end of the other vertlcal frame member adaptedtoV return the cooling water, a strut connecting the upper ends of theside members and means for attaching a suspending device to said strut.

A water cooled damper for incinerators or the like, having a hollowframe consisting of a pair of vertical s ide members connected by ahollow cross member at their lower ends, a plurality of horizontallyarranged iire clay members extending across the frame above said crossmember resting one upon the other and having end grooves adapted toreceive the vertical members of the hollow frame, a hollow cross memberimmediately above the fire clay members and communicating with saidhollow side members and made up of complementary parts joined by a unionto enable thel separation of the parts for the replacement of the lirebrick, a flexible water supply pipe secured to the upper end of one ofthe vertical frame members connected with the supply of water, aflexible supply pipe secured to the upper end of the other verticalframe member adapted to return the cooling water, a strut connecting theupper ends of the side members and means for attaching a suspendingdevice to said strut.

EDGAR BOYD KAY.

